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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-20-000027
Filing Date
2020-05-08
Accepted
2020-05-08 08:53:53
Documents
103
Period of Report
2020-03-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES FORM 10-Q 3-31-2020 a2020q1form10-q.htm   iXBRL 10-Q 2275522
2 MDU RESOURCES 401 K RETIREMENT PLAN RESTATED 4-1-2020 a2020q1ex10a.htm EX-10.A 610369
3 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2020q1ex31a.htm EX-31.A 9825
4 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2020q1ex31b.htm EX-31.B 9256
5 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2020q1ex32.htm EX-32 6882
6 MDU RESOURCES MINE SAFETY DISCLOSURES a2020q1ex95.htm EX-95 93211
  Complete submission text file 0000067716-20-000027.txt   11678721

Data Files

Seq Description Document Type Size
7 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20200331.xsd EX-101.SCH 55587
8 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20200331_cal.xml EX-101.CAL 93618
9 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20200331_def.xml EX-101.DEF 392852
10 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20200331_lab.xml EX-101.LAB 805334
11 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20200331_pre.xml EX-101.PRE 489735
38 EXTRACTED XBRL INSTANCE DOCUMENT a2020q1form10-q_htm.xml XML 2427427
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1000
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

IRS No.: 301133956 | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 20858903
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)